In which of the beakers does the scientist observe clear evidence of a chemical reaction?
a beaker 1 only
b. beaker 2 only
c. beaker 3 only
d. beakers 2 and 3

Which term describes a fracture in the earth at which land stays in the same place? a. joint b. fault c. split d. hinge

Which position represents spring in the southern hemisphere? a) b) c) d)

Which of these is not an example of chemical weathering? a. iron-rich mineral rusting b. feldspar turning into clay c. limestone reacting with acid d. granite breaking up into sand